1)A single module with 2 E1; 2)Support SIP, H323, SS7 ... 102 is one of them. It contains single module with 2E1, support SIP, H323, SS7, PRI and ... 1U. NC-MG800-102 is a new generation of small-capacity media gateway,with a powerful processor, embedded operating system ... Calling party number translation; second stage dialing, Autodialing with DTMF, Ring Back tone. CapacityTypeCapacityThe number of single ...